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 #include &lt;QtGui&gt;

 #include &quot;slidersgroup.h&quot;
 #include &quot;window.h&quot;

 Window::Window()
 {
     horizontalSliders = new SlidersGroup(Qt::Horizontal, tr(&quot;Horizontal&quot;));
     verticalSliders = new SlidersGroup(Qt::Vertical, tr(&quot;Vertical&quot;));

     stackedWidget = new QStackedWidget;
     stackedWidget-&gt;addWidget(horizontalSliders);
     stackedWidget-&gt;addWidget(verticalSliders);

     createControls(tr(&quot;Controls&quot;));

     connect(horizontalSliders, SIGNAL(valueChanged(int)),
             verticalSliders, SLOT(setValue(int)));
     connect(verticalSliders, SIGNAL(valueChanged(int)),
             valueSpinBox, SLOT(setValue(int)));
     connect(valueSpinBox, SIGNAL(valueChanged(int)),
             horizontalSliders, SLOT(setValue(int)));

     QHBoxLayout *layout = new QHBoxLayout;
     layout-&gt;addWidget(controlsGroup);
     layout-&gt;addWidget(stackedWidget);
     setLayout(layout);

     minimumSpinBox-&gt;setValue(0);
     maximumSpinBox-&gt;setValue(20);
     valueSpinBox-&gt;setValue(5);

     setWindowTitle(tr(&quot;Sliders&quot;));
 }

 void Window::createControls(const QString &amp;title)
 {
     controlsGroup = new QGroupBox(title);

     minimumLabel = new QLabel(tr(&quot;Minimum value:&quot;));
     maximumLabel = new QLabel(tr(&quot;Maximum value:&quot;));
     valueLabel = new QLabel(tr(&quot;Current value:&quot;));

     invertedAppearance = new QCheckBox(tr(&quot;Inverted appearance&quot;));
     invertedKeyBindings = new QCheckBox(tr(&quot;Inverted key bindings&quot;));

     minimumSpinBox = new QSpinBox;
     minimumSpinBox-&gt;setRange(-100, 100);
     minimumSpinBox-&gt;setSingleStep(1);

     maximumSpinBox = new QSpinBox;
     maximumSpinBox-&gt;setRange(-100, 100);
     maximumSpinBox-&gt;setSingleStep(1);

     valueSpinBox = new QSpinBox;
     valueSpinBox-&gt;setRange(-100, 100);
     valueSpinBox-&gt;setSingleStep(1);

     orientationCombo = new QComboBox;
     orientationCombo-&gt;addItem(tr(&quot;Horizontal slider-like widgets&quot;));
     orientationCombo-&gt;addItem(tr(&quot;Vertical slider-like widgets&quot;));

     connect(orientationCombo, SIGNAL(activated(int)),
             stackedWidget, SLOT(setCurrentIndex(int)));
     connect(minimumSpinBox, SIGNAL(valueChanged(int)),
             horizontalSliders, SLOT(setMinimum(int)));
     connect(minimumSpinBox, SIGNAL(valueChanged(int)),
             verticalSliders, SLOT(setMinimum(int)));
     connect(maximumSpinBox, SIGNAL(valueChanged(int)),
             horizontalSliders, SLOT(setMaximum(int)));
     connect(maximumSpinBox, SIGNAL(valueChanged(int)),
             verticalSliders, SLOT(setMaximum(int)));
     connect(invertedAppearance, SIGNAL(toggled(bool)),
             horizontalSliders, SLOT(invertAppearance(bool)));
     connect(invertedAppearance, SIGNAL(toggled(bool)),
             verticalSliders, SLOT(invertAppearance(bool)));
     connect(invertedKeyBindings, SIGNAL(toggled(bool)),
             horizontalSliders, SLOT(invertKeyBindings(bool)));
     connect(invertedKeyBindings, SIGNAL(toggled(bool)),
             verticalSliders, SLOT(invertKeyBindings(bool)));

     QGridLayout *controlsLayout = new QGridLayout;
     controlsLayout-&gt;addWidget(minimumLabel, 0, 0);
     controlsLayout-&gt;addWidget(maximumLabel, 1, 0);
     controlsLayout-&gt;addWidget(valueLabel, 2, 0);
     controlsLayout-&gt;addWidget(minimumSpinBox, 0, 1);
     controlsLayout-&gt;addWidget(maximumSpinBox, 1, 1);
     controlsLayout-&gt;addWidget(valueSpinBox, 2, 1);
     controlsLayout-&gt;addWidget(invertedAppearance, 0, 2);
     controlsLayout-&gt;addWidget(invertedKeyBindings, 1, 2);
     controlsLayout-&gt;addWidget(orientationCombo, 3, 0, 1, 3);
     controlsGroup-&gt;setLayout(controlsLayout);
 }</pre>
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